[06-06-2016] The U.S. Food and Drug Administration (FDA) is warning consumers about the risk of serious bleeding when using nonprescription, also known as over-the-counter or OTC, aspirin-containing antacid products to treat heartburn, sour stomach, acid indigestion, or upset stomach.

Levaquin (levofloxacin) and Bactrim (sulfamethoxazole and trimethoprim) are antibiotics used to treat several types of bacterial infections. Levaquin and Bactrim belong to different drug classes. Levaquin is a fluoroquinolone antibiotic and Bactrim is a combination of a sulfonamide antibiotic (a "sulfa" drug) and a folic acid inhibitor.